Feeding mechanism for sewing-machines.



Patented Dec. |I, |900. P. DIEHL & A. GHIEB. FEEDING MECHANISMFUR SEWING- MACHINES.

(Application filed Aug. 2, 1900.)

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No. 663,673. Patented Dec. n, :96m

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FEEDINGMECHANISM FOR SEW'ING MACHINES.

(Application med Aug. 2, 1900.)

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FEEDING MEGHANISM FOR SEWING MACHINES.

(Application led Aug. 2, 1900.)

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PHILIP DIEHL AND ALFRED GRIEB, OF ELIZABETH, NEW JERSEY, ASSlG'fNORS TO THE SINGER MANUFACTURING COMPANY, OF NEW JERSEY.

FEEDING NIECHANISIVI FOR SEWING-MACHINES SPECIFICATION forming part of Letters Patent N o. 663,67 3, elated December 11, 1900.

Original application filed April 9, 1900, Serial No. 12,215. Divided and this application filed August 2, 1900. Serial No. 25,608. LND model.)

To @ZZ whom, t may concern: mechanism, by a rocking Afeed-shaft u, hav- Be it known that we, PHILIP DIEHL and ing at its rearend an arm o, to which is jointed ALFRED GRIEB, citizens of the United States, the lower end of a feed connection or link l, residing at Elizabeth, in the county of Union operated from a cam or eccentric w on the and State of New Jersey, have invented cerdriving-shaft c. The vertical movements of 55 tain new and useful Improvements in Feedthe feed-bar are imparted thereto from the ing Mechanisms for Sewing Machines, of grooved cam o in the rocking hub or sleeve n, which the following is a specilication, referjournaled on the iiXed pin or stud the ence being had therein to the accompanying groove of said cam being entered by a rollerio drawings.' stud y on a lever z, pivoted at 2 tothe bracket 6o This invention relates to a positive four- 3, depending from the work-plate, and forked i motion feeding mechanism more especially or slotted at its free end to embrace a rolleradapted for use in connection with an oscilstud 4., with which the feed-bar tis provided. lating loop-taking hook which carries the The hook-shaftscarries at its upper end the loops of needle-thread around a thread-case horizontally-disposed circular-moving hook 65 supported by said hook, as fully described in or hook-ring 5, connected with said shaft by our United States application, Serial No. one or more webs or spokes 6, said hook-ring 12,215, filed April 9, 1900, of which applicahaving an inwardly-extending rib or flange 7, tion this case is a division. on the inner face of which is formed the loopzo In the accompanying drawings, Figure 1 is seizing beak orhook proper,8,outside of which 7o asectional side view of asewing-machine emis a throat 9, in which the loops of needlebodying the invention. Fig. 2 is a bottom thread are carried around the thread-case 10, plan View thereof; and Fig. 3 is a section on having a peripheral groove l1, entered by the line 3 3, Fig. 2, looking in the direction of the said rib or flange 7, to enable the said threadarrow adjacent to said line, showing the workcase to be entirelysupported by the said hook- 75 plate and the parts located below the same. ring or hook,owiug to the rib-and-groove con- Fig. 4 is a plan view of the oscillating hook nection of these parts. The thread-case is and the thread-case supported thereby and preferably furnished with a bobbin l2 to conadjacent parts. Fig. 5 is a cross-section of tain the lower or locking thread; but it is obthe oscillatinghookon line 55, Fig. Ll, showing vious that a cop of thread might be used in- 8o the hook-shaft and thread-case in elevation. stead of the bobbin, if desired. Attached to Referring to the drawings, d denotes the the bracket 3 and arranged within the hookarm of the machine, hthe bed-plate, and c the ring is a holder 13, which serves to maintain horizontal driving-shaft journaled in the upthe thread-case stationary as the hook-ring per portion of said arm and provided near its travels about it. 85 rear end with a crank d and having at its for- From the foregoing it will be apparent that ward end a crank e, connected by a pitman f we secure a four-motioned feeding mechanwith the needle-bar g, carrying the usual eyeism in which all the movements of the feedpointed needle 7i, said crank c being also conbar are positive and that we operate the rocknected in a well-known manner with the shaft which carries the oscillatingI hook 9o link take-up t'. The crank d is embraced through the rocking hub or rocker which imby a fork at the upper end of a vertical rockparts the positive up and down movementsto shaftj, having at its lower end an arm 7c, conthe said feed-bar. nected by a pitman Z to an arm 'm of a rock- Ve do not herein claim the horizontallying hub n, provided with a grooved cam o, and disposed oscillating hook which supports the 95 having a second arm p, joined by a link q to thread-case arranged eccentrically to the axis an arm r of the rocking hook-shaft s. of said hook or the other specic devices co- The feed-bart, carrying the usual feed-dog, operating therewith and incidentally shown is reciprocated horizontally, as is common in in Fig. 1, as these features are embraced by 5o a wellknown style of Singer feeding our application hereinbeforereferred to; but roo What We do herein claim is- 1. In a sewing-machine, the combination with a driving-shaft in the upper portion of the arm thereof, of a needle-bar operatively connected with the forward end of said shaft, a vertical rock-shaft in the Vertical portion of said arm and operatively connected with said driving-shaft,afeed-barand connections with said driving-shaft for imparting horizontal or feeding movements to said bar, a vertical rocker provided with a cam for imparting vertical movement-s to said feed-bar, a vertical rock-shaft operatively connected with said rocker, and a loop-taking device operated by said rook-shaft and cooperating with the needle carried by said needle-bar in forming stitches.

2. The combination With the driving-shaft c,of the needle-bar operatively connected With the forward end of said shaft, the rock-shaft jconnected with the said driving-shaft, the

feed-bar and connections with said drivingshaft for imparting horizontal feeding movements thereto, the rocking hub n provided with a grooved cam for imparting vertical movements to said feed-bar and having also the arms m and p, the pitman Z connecting said rock-shafrj` with the said arm m of said rockinghub, the rock-shaft s operatively connected with the said arm p'of said rocking hub, and a loop-taker actuated by said rockshaft and cooperating with the needle carried by said needle-bar in the formation of stitches.

In testimony whereof We affix our signatures in presence of two Witnesses.

PHILIP DIEHL. ALFRED GRIEB.

Witnesses:

W. IRVING HoUGHToN, HENRY J. MILLER. 

